RBC Flashcards
(12 cards)
What is the primary function of red blood cells (RBC)?
Transport oxygen and carbon dioxide
Red blood cells carry gases through hemoglobin.
What is the average number of red blood cells per microliter of blood?
5-5.5 million
This number can vary slightly among individuals.
What shape do red blood cells typically have?
Biconcave
This shape increases surface area for gas exchange.
Where are red blood cells formed during embryonic development?
Yolk sac
Initially, RBC formation occurs in the yolk sac before transitioning to other organs.
In adults, where are red blood cells primarily produced?
Red bone marrow
RBC production occurs in the red bone marrow of long bones.
What is the significance of hemoglobin in red blood cells?
Carries oxygen and carbon dioxide
Hemoglobin binds to oxygen to form oxyhemoglobin and to carbon dioxide to form carbaminohemoglobin.
True or False: Most mammals’ red blood cells contain a nucleus.
False
Mature red blood cells in mammals typically lack a nucleus to maximize space for hemoglobin.
Fill in the blank: Red blood cells do not contain _______.
Organelles
This absence allows for more hemoglobin storage.
What pigment gives red blood cells their color?
Hemoglobin
Hemoglobin is a protein that contains iron, contributing to the red color of blood.
What are the two main gases transported by hemoglobin?
- Oxygen
- Carbon dioxide
Hemoglobin’s role in gas transport is crucial for respiration.
What is the role of mitochondria in red blood cells?
Red blood cells lack mitochondria
This is due to their structure and function focusing on gas transport rather than energy production.
What is the embryonic origin of red blood cells?
Yolk sac, liver, spleen
RBC formation starts in the yolk sac and later involves the liver and spleen before reaching the red bone marrow.
